216196688 has 40 divisors (see below), whose sum is σ = 444304896. Its totient is φ = 101692800.

The previous prime is 216196681. The next prime is 216196703. The reversal of 216196688 is 886691612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216196681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17633 + ... + 27263.

Almost surely, 2^216196688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216196688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222152448).

216196688 is an abundant number, since it is smaller than the sum of its proper divisors (228108208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216196688 is a wasteful number, since it uses less digits than its factorization.

216196688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9723 (or 9717 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 216196688 is about 14703.6283957396. The cubic root of 216196688 is about 600.1820632679.

The spelling of 216196688 in words is "two hundred sixteen million, one hundred ninety-six thousand, six hundred eighty-eight".